Lack of stove draft is an unpleasant phenomenon that sooner or later every owner of a bath is faced with. The only case where smoke can be found inside the premises "legally" is in the black firebox. If the chimney has a conventional design, but for some reason does not function, then it is necessary to figure out why the stove is smoking in the bath and eliminate the malfunction.
Possible Causes of Smoke
Smoke causes instinctive fear in most people. You should not panic and jump to conclusions that it is time to change the stove.
It is necessary to sort out all possible causes of improper air circulation, starting with the simplest ones:
|Possible causes||Diagnostics and elimination|
|Forgot to open the view||Open the damper|
|Accumulated ash in the blower interferes with the flow of air||Clean the blower|
|It's warmer outside than in a bathhouse, and the law of reverse draft is in effect||Warm up the chimney and chimneys (with burning paper or birch bark)|
|Height pipes smaller than the height of the roof ridge (smokes in the wind)||Extend the pipe 30-40 cm higher than the ridge. It is also useful to put on a protective cap|
|Chimneys are clogged with soot, the pipe is clogged with something||Clean the pipe with the help of improvised means (cable with a "brush"). Anything can be found inside, even a hornet's nest.|
If the pipe diameter is less than 15 cm, it will constantly "overgrow" with soot - it is better to change it to a wider one. The chimney and wells are cleaned regularly. The soot from the walls can be burned out with a torch.
It is not recommended to burn plastic in the oven - it gives a sediment tightly adhering to brick and metal
|The pipe is damaged - burnt out, rusted or cracked. It can also be damaged by falling snow||The metal pipe is changed, the brick is moved. The brick pipe must be whitewashed to notice the gap in time|
|A crack has formed in the furnace body||The metal furnace is being welded or replaced.|
In a brick oven, they examine the masonry, look for through cracks with a lighter or a candle - during the heating, the flame will intensively draw into the cracks.
All cracks are covered with clay with sand (3: 1), diluted to thickening sour cream. You can use special glue for stoves and fireplaces (Hercules or similar).
The stove and the oven (oven) are also examined for cracks
|The lower rows of the masonry are damp||Sometimes, for this reason, completely new smoke is emitted ovens - until dry.|
The stove is heated with medium intensity (preferably with aspen wood) until completely dry. Or open and dry the lower well (through the hole for cleaning, usually it is covered with half a brick and covered with clay)
|The design of the furnace is broken or initially unsuccessful||The defect is not it is always easy to detect - the base has sagged or the partition between the wells has crumbled, a piece of brick is stuck in the chimney, etc. The reason may be the venerable age of the stove, poor-quality brick or non-observance of the operating rules (water got on the hot masonry, for example).|
There are also many options for unsuccessful designs. Too thick seams, violation of horizontality, the location of the blower above the level of the lower gas duct, etc. In this case, it is unlikely that it will be possible to cope without consulting an experienced master.
A blower too long can cause smoke when the stove is heated with wood. It is necessary to shorten it by placing 1-2 brick halves to the far wall
If all else fails...
If all the above measures did not help and it was not possible to establish why the stove is smoking in the bath, you should contact a specialist stove-maker.
*** Cases are not considered when the stove, welded or folded "by eye", does not smoke without proper knowledge and drawings. Such structures not only smoke, but also often cause a fire. Furnaces are complex engineering structures; their creation and maintenance must be taken seriously..